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Safety concerns involving Model B1 relays, manufactured by General Railway Signal (GRS), between the years 1960 and 1985, and their potential to stick and remain in the energized position. ALSTOM Signaling,Inc., which has acquired GRS, estimates that app

Document Series
Safety Advisories
Safety Advisory Number
2000-01
Subject Signal and Train Control
Keywords
Signal and Train Control; GRS ;� relay failure; B1 relay

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Published Date: Thursday, May 11, 2000